Flush valve



W. E. SLOAN FLUSH VALVE Filed April 28, 1924 May l?,

.Patented Mey i1, v1932.?.

PATENT; oFFicr.

g winrar n. stom, or cnioaco, more nnen varvn Rppuecion sied mi as,

This invention relates to flush valves andl has for its object to provide a new and iinproved device of this'descri tion. The iri-V vention has as a further ob]ect to rovide l means for preventing noise during t e closing of the valve. The invention has as a further object to provide a ush valve wherein there is extreme pliability for ease of opening and closing. The invention has as a fur- 10 ther object to provide a flush valve which will operate at an desired pressure including low pressures. 'ghe invention has as a further object to provide aiiushi valve which shall be of comparatively simple and cheap construcll tion and at the same time free from trouble in service. -The invention has further objects which are more particularly 4pointedv out` in the following description. Referring now to the drawings I0 Fig. 1 is a sectional view showing one form Y of the ilush valve embodying the invention.

Fig. 3 is an enlarged sectional view .Il through the diaphragm of the valve.

Fig. 4 is a view of the interior cover as seen from beneath. 4

Like numerals refer to like parts throughout the several figures. v

` 1.00 Referring now to the drawings, I haveshwn a flush valve having acasing 1 with an admission opening 2 A through which lthe water enters. Within the casing is a cylmdrical portion 3, the upper end of which, actsV as a valve seat. vConnected the casing 1 is a removable cap 4and wit the removable cap is an inside cover 5, s 1d cover having@ shoulder 6 which is engaged bya shoulder on the cap when thg cap is screwed down,

clearly shown in Fig. 1: Within the cas mg is a guide 7 whichehts into and is guided by thecylindrical portion 3. -The main valvey of the flush valves is connected with this i guide and consists of a diaphragm 8 having a a central opening therethrough and whichjs and a member 10 which also has an opening therethrough and which is provided with a sleeve '11 having a screw threaded engge- .u mentwiththeguide7. Anauxiliaryv ve between a shoulder 9 on the guide 7 im. seri/ai in. maar.

uimg member 13 associated therewith. The' vauxiliary valve is provided with a stem 14 which projects through the opening in the 6I ,member 10 into the guide 7. This stem is provided with avslidi'ng sleeve- 15 which projects beond the endo the stem and is free- 1y slida le therealon butA is prevented from becoming disengage from the stem. The 00 guide 7'as herein shown is provided with a series of lateral projections or wings 16 which are interposed between the .main body of the guide and theA inner wall of the cylindrical portion 3. These wings aremade so as to 06 provide a loose fit of the guide in the cylindrical portion 3. With the ordinary diaphragm it was necessary to have a very close iit between these, wings and the inner face of the cylindrical ortion 3 or otherwise the 7 valve would ratt e when operated. When a. loose fit of the guide is provided some means must also be provided for preventing this noise when the valve is operated. I have provided such means in the resent case in the 75 construction of-th'e diap ragm 8. In this construction-the dia hragm is provided with a. lower section 17 ofpsoft rubber` which makes a water tight connection. Some means is provided for giving this soft rubber suiie0 cient rigidity to prevent lateral movement of the guide 7 and yet arranged so it will retain suilicient iiexibility to have theproper action. the construction shown I have y provided a stiiening element 18 which is con- 86 nected with the diaphragm and which acts to give it suicicnt rigidity and` yet not in; ter ering with its iexibility. This stit'ening element may beof any suitable construction, for exm le it may be made of firm rub- 90 ber, or it ma e made of other material, the requirement ingthat it shall give sufficient lateral ri 'dity and yet not interefere with the flexibi ity -of the diaphragm in its o era- 'tion.f The, stiiening element 18, as s own 95 herein, consists of afirin rubber-section and the soft lrubber diaphragm is recessed tore- ,ceive it. There is preferably a space 19 between the sti'ening. element 18- and the diaphragmvsection 17 so as toaccommodate the 10 parts to the bendin of the diaph'ra m and permit the easy ben ing without inter erence. As shown in Fig. 3, the diaphragm 8 is made up of the soft rubber section 17 which is referably rovi ded with a metal ring 20 emedded in t e rubber, the stifening element 18 being placed on the top and the several elements being held together by a sleeve 2l which passes through the Pcentral opening and has its upper and lower edges 22 and 23 bent under to clamp the parts. Some means is provided for preventln the element 10 from being screwed into t e guide too far so as to exert too great a compression on the diaphragm. The metal sleeve 21 in this construction performs this function, as it takes the clamping pressure, being located between the elements 10 and the shoulder 9 on the guide 7. The diaphragm divides the interiorl of the valve into two chambers 25 and 26 and there is a passageway of comparatively small sectional area between the .two chambers. This passageway consists in part of a passageway 27 in the interior cover 5 and a tube 28 which extends through the diaphragm 8. In the present construction this tube lits into the diaphragm and is as it were a part of the diaphragm having a roughened outer face to cause it to make a tight lit with the dia-y hragm. The lower end ofthis tube passes lbosely through a ledge 29 of the casing 1. The inner cover 5 is provided with a groove 30 which preferably extends entirely around the bottom of the cover and which communicates with the passageway 27. The tube 28 connects with this groove 30.50 that water can pass from the chamber 25 through the tube 28 and into the groove 30 and thence by passageway 27 into the chamber 26 so that water may pass up into the upper chamber to e ualize the pressure in the two chambers. Tqhere may be a lurality of the passageways 27 if desired;v he groove 30makes it unnecessary toplace the inside cover in any particular position when assembhng the valve because whatever its position the tube 28 will connect with it and thus the equalizmg con-3 nection will be made between the chambers 25 vand 26. The tube 28 is a part o t the diaphragm, that is itis tight in the diaphragm and loose in the casing, so that when the diabra 1t. is is advantageous in the manufacture as it makes it unnecessary to have an accurate fit of the tube into the casing. It also makes it easy to inspect and clean the tube and change it when necessary as the tube can be easily removed from the diaphragm by applying'pressure to the end thereof. Slnce the tube projects from the bottom of the diaphragm,` the roughened ortion of the tube being at the top end, it wi lbe seen that this also makesit' impossible to ace the diaphragm wrong side up in assem ling the valve." I Y y is removed the tube is removed with.

the twol sections o the diaphragm, one of the sections being recessed to receive the other section whereby a rattlin engagement between said guide and said cy indrical portion during theclosing movement of the valve is prevented. V

2. In a valve comprising a casing having a lpassageway theret rou-gh, a yhollow cylinwith said diaphragm and loosely itthe central openin s for iolding together drical portion in said casing, a flexible diaphragm'extending across the casing and dividin it into two chambersLand a guide connected with said diaphragm and loosely fitting into .said hollow cylindrical part the herein described improved diaphragm made Aup of two sections, said sections having central openings and a bindin device through the central openings for olding together the two sections of the diaphragm one of the sections 'beine' `recessed to; receivethe other section, said atter section being smaller in diameter than the other section whereby a rattling engagement between said guide and said cylindrical portion during the closing movement of the valve is prevented.

3. In avalve com risin a casing having a passageway theret roug a hollow cylindrical .portion in said casing,a flexible diaphragm extending acrossxthe casing and dividin it into two chambers, and a guide connecte with said diaphra m and loosely fitting into said'hollow cyindrical part the herein described improved diaphragm made up of two sections, one of said sections being smaller in diameter than the other, the section of larger diameter being recessed to receive the smaller section whereby a rattling engagement between said guide and said cylindrical portion during the closing movement of the valve is prevented. Y

4. A valve comprising a casing having a passageway therethrough, a hollow cylindricalportion in said casing, a diaphragm4 extending across the casing and dividingit into two chambers, a centrally located opening through said diaphragm, a guide con'- nected with said diaphragm and loosely re` 1 ceived in said hollowcylindrical portion,

an auxiliary valve mounted on said diaphragm, a flexible stiening device connected with said diaphragmwherebyit is given suf- Iso low cylindrical portion when. the valve is operated is prevented. e

5. A valve comprising a casing having a passageway therethrough, a hollow cylmdrical portion in said casing, a diaphragm extending across'the casing and dividing it into two chambers, a centrally located opening through said-diaphragm, a guide cnnected with said diaphragm and loosely received in said hollow cylindrical ortion, an auxiliary valve mounted on said iaphragm, a flexible stiienin device connected with said diaphragm w ereby noise due to thev pounding of said guide against said hollow cylindrical portion when the valve is operated is preventedsaid flexible stifening device having an openin which registers with the openingv in the iaphragm, and a metal connecting deviceconnectng them together at the points, said'metal connecting device acting to prevent undue compression of the diaphragm and stifening device when pressure is exerted thereto. Signed at Chicago, county of Cook and State of Illinois, this 12th day of April, 

